Operating loader, extending back to reach levers and steering, and noticed a sharp pain in his lower back. He missed 11 days of work and was released to come back 5/8/07 with 30 lbs. Lifting restriction. He had elective non-work related surgery on 5/8/07 and did not return to work until 5/15/07. He was released from lifting restrictions on 5/18/07.